package com.spring.controller;

import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.thymeleaf.util.StringUtils;

import javax.servlet.http.HttpSession;

@Controller
public class LoginController {
    @RequestMapping("/user/login")
//    @ResponseBody：不能有这个注解，有他就不能跳转到视图了
    public String login(
            @RequestParam("username") String username,
            @RequestParam("password") String password,
            Model model,
            HttpSession session) {
//        具体的业务
        if (!StringUtils.isEmpty(username) && "123456".equals(password)) {
            session.setAttribute("loginUser",username);
            return "redirect:/main.html";
        } else {
//            告诉用户您登陆失败了
            model.addAttribute("msg", "用户名或者密码错误！");
            return "index";
        }
    }

}
